Update changelog

src/site/markdown/overview/changelog.md

@@ -6,10 +6,15 @@
 
 **Feature Requests and Improvements:**
 
+*   java
+    *   Type Resolution performance improved by ~15%
+
 **New/Modified/Deprecated Rules:**
 
 **Pull Requests:**
 
+*   [#126](https://github.com/pmd/pmd/pull/126): \[java] Avoid creating a new String to qualify types
+
 **Bugfixes:**
 
 *   XML